First off...this seminal Sci-Fi "insect" movie actually has Leonard Nimoy in it!..He speaks one line, and is seen in the final scene, machine-gunning the mutant ants!..With this bit of info-that most reviewers have not noticed-we are treated to a great cast of actors, several of whom became well-known via Television appearances. James Whitmore, Fess Parker, James Arness, and a few others will be familiar to you. As for the movie, I saw it when I was nine years old, and was forever impressed!...A good, well-paced script, quite good special effects (the giant ants, in actuality, consisted with just one, very detailed rendition of an ant, mounted cleverly on a large forklift!..it was the only mobile monster used, but great editing made those ants seemingly attacking everywhere!)...this movie is simply the best of many other movies that followed this formula...I caught most of them too, having been forever impressed by THEM!